Still



Dec 8 1925.

P. YOUNG STILL Filed June 5, 1920 tie n,

PATENT orrici.-

-, EQBT TEXAS, ASSIGNOR TO THE TEXAS COMPANY, OF

153311;? EJ'Glltfifi, 331 TR, A GORPORATION OF TEXAS.

TILL

.dpphestion filed June 5,

- s in which rinsed to colts.

re used in oil refineries for rednci: colre, ere vs I being frequently 4% feet in long ii one i i feet in diameter. Intense hes-t applied to the still but as long as any liquid oil remains in the still, the str 'ns due to the expansion, are not excessive. However, the lighter products are vaporized and driven off. leaving the dry coke on. f e bottom oi: the still, the tempers ture of bottom plot/es is greatly increased an "ension the usual still structures, tly shears the rivets on the bottom necessit es the early replacement of the entire bottom of the has been my m ficolty, s pe hem nose to overcome this difto my invention, 1' tom of the -zively light or These plates renter less occurs, but the r d oil and when the v iy necessary rereplacing the entire invention may be th. "stood, .i will now describe the same .ie following specification and will then point out the novel features there 1 I imsv drawings: side elevation of a still or 1920. Serial No. 336,878.

or side plate, and an expansion sheet or strip which is relatively thin.

r 10 designates a coke still of usual form, having top sheets 11, side or lug sheets 12, and relatively heavy and rigid still bottom sheets 13. In accordance with my invention the still bottom sheets 13 are spaced apart longitudinally of the still as shown in Figure l, and relatively thin expansion sheets 14. i

are. interposed. The heavy bottom sheets 13 in the s'rran emcnt shown, overlap the lug shoots 12 Willie the expansion sheets are inside. and nuclei-lap both the lug sheets and the heavy bottom sheets The sheets are riveted, welded, 0r secured together in any suitable manner.

.The expansion plate is characterized by the fact that it is adapted to yield before the adjacent bottom plates and consequently will avoid shearing off the rivets or breaking the joints between the plates. As illustrated,

the expansion plates 1d are thinner their iart, and I intend no further; limitations other than those imposed by the appended claims: I

"What I claim is: v i

l. A coke still having a still bottom stormed of spaced still bottom pistes, and interposed relatively yieldablc fiat expansion sheets.

2. A coke still having a still bot-tom formed of spaced still bottom plates, and interposed relatively thin expansion sheets.

3.1K coke still having a still bottom formed of s'paced still bottom plates of relatively hard metal, rind interposed-"upon sion sheets of softer metal.

4. A coke still having a still bottom formed of spaced still bottom lates made of metal having a relatively high-melting point and interposed expansion sheets made of metal having. a lower melting point.

5, A coke still having a still bot m inerggased zelwnimiy thin nen-ebrrugabed expanama shed-gs 6.. A coke-'stiii having its befiatom portiqa formed of" aissmately disyosed relatively 6 thick m2 thin plates secured togeisher.

7. A still for reducing crude oil in sake sf substantially cylindricai form havin approximataly 160 degrees of the lower portinn of its enphery censtructed of relatively m heavy p axes spaced apart longitudinally 01 the aaili and. interposed relatively thin 23* pmsion sheets. 8 A coke still having & mmmiormed of a plumlifiy of spmed bottom plates of relatively matm'iai, and an intsrpcsed relatively yieidvbie flan, expansion sheet interposed; betmaen said z'igid plates.

In Witmss Whereuf I have hereunto signed. my name this 25 day of May 1920.

' RSUL YOUNG. 

